Variations on a Brandenburg Salamander

In the spring of 1793, the entomologist Johann Friedrich Wilhelm Herbst, as a means to supplement his lectures at the newly founded Berliner Tierarzneischule, outfitted his dissecting microscope (built from Lieberkühn’s designs) with the projection apparatus of a lucernal microscope (after Bonnanni) and an enclosed lantern. This, combined with an additional, exterior light source, allowed his often-minute anatomical demonstrations to be cast magnified against a wall. (Read more at Berfrois)